Alexandee logan



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A. LOGAN.

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ATTORNEYS.

UNITED STATES PATENT ALEXANDER LOGAN, OF NORTH SYDNEY, NOVA SCOTIA, CANADA.

STU M P-EXTRCTO n.

SPEQIEICATION forming part of Letters Patent No. 339,565, dated April 6r 1886.

Application filed September 19, 1885. Serial No. 177,523. (No model.)

.To @ZZ whom t 77mg/ concern:

Be it known that I, ALExANDEn LOGAN, of North Sydney, in theProvince of Nova Scotia and Dominion of Canada, have invented a new and Improved Stuinp-Iilxtractor, of which the following is a full, clear, and exact description.

My invention relates to machines for extracting stumps from the soil, and has for its object to improve the construction of machines of this class so as to make them inexpensive, powerful, and durable, and enable them to be operated more conveniently than other machines for a like purpose.

The invention consists in certain novel features of construction and combinations of parts of the stump-extractor, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of referenceiudicate corresponding parts in both the figures.

Figure l is a side elevation of my improved stump-extractor as applied to use, and Fig. 2 is a plan View of the machine with the pull ing-chain broken away and the tree to which the machine is anchored in horizontal section.

The letter A indicates the main frame of the machine, which consists, preferably, of metal side plates, c a, connected by a front crossbar, c', and a rear cross-bar, a2, and supported at the front by a wheel, B, which is jonrnaled in the lower ends of any suitable bars or plates, b, which are fixed at their upper ends to the frame A, which frame is supported at its rear end by the legs B B', braced to each other by the crossbar b. A shaft, C, journaledin the frame A, has fixed to it the large gear-wheel D and the small gear-wheel or pinion E, and the pinion E meshes with the large gear-wheel F, which is fixed to a shaft, G, journaled in the frame A, and said shaft G also has fixed to it the chain-wlieel H, which is provided in itsv periphery with the elongated recesses h, in which the links of the pull-chain I catch, as Clearly Shown in Fig. 2.

In uprights j j, fixed to the side bars of the frame A, is journaled a shaft, J, which carries a pinion, K, which meshes with the first wheel, D, of the multiplying gear, andthe shaft .Ilias crank-handles L L iitted at its opposite ends, by turning which motion may be given through the gearing to the chaixrwheel Hin the direction of the arrow zu, to pull on the chain Iand extract a stump, S, to which the chain may be ixed in any approved Way. -A pawl, d, pivoted to -frame A, may be engaged with the wheel D, to hold the gearing at rest when required.

To anchor the machine against the pull on it of the chain I when extracting a stump, I hinge curved arms M M, one to the back end of eac-h of the side bars, c c, of the frame A, and said arms M M have hooks N N at their back ends, into which the links of the staychain O may be caught, so as to clamp the hook-arms M M tightly to a tree or stump, P, as shown.

To the frame A is fixed an arm, R, which extends laterally and has a bent end, r, which approaches quite closely to the chain-link recesses h of the chain-wheel H, and acts to pre vent the Vchain I from winding around the chain -wheel, so that the chain, when once drawn backward over the wheel, will coil npon the ground below the machine.

A grooved pulley or barrel, T, on a shaft, U, fitted in the frame A, serves to guide the chain I to the chain-wheel II.

It is evident, when the arms M M and chain O are connected to a tree or stump to anchor the machine thereto, and when the chain I, after being connected to the stump, S, to be eX- tracted, is laid over the chain-wheel IFI, as indicated in Fig. l, that by turning the cranks L the stump will be pulled from the ground. Should the anchorage-fastenings M O give way under the strain, the machine will run forward or rebound on the wheel B toward the stump and no harm will come to the machine.

l/Vith this machine stumps located anywhere within a circle described by the fullv length of the pull-chain I may be extracted without shifting the machine from the tree or stump I), to which it first was anchored, and when the machine is to be moved it may be truudled along on the wheel B as an ordinary wheelbarrow, the back ends of the frame A or the hook-arms M M serving as handles for lifting the legs B from the ground and gnid ing the machine to any place required.

All parts of the machine are very simpie, strong, and durable, and the machine may be made at low cost and is very powerful in use.

If desired, the shaft .I may be tted with a ICO pulley to receive a belt running from a pulley on a horse-power or other motor, which may be availed of for pulling the stumps, and the chain-Wheel H may be bolted to the gear- Wheel F, instead of being lixed directly to the shaft G, so as to allow renewal of either the wheel F or the chain-Wheel, should either one break or Wear out, and as will readily be undex-stood.

Having thus described my invention, what I claim as new, and desire to secure by Let-ters Patent, is-

l. In a stump-extractor, the combination, with the frame A, supporting the chain-Wheel H and its operating-gearing, substantially as described, of the hinged arms M M and the chain O, connected to the outer ends of said arms, substantially as herein set forth.

2. In a stu nip-extractor,comprising a i' rame,

A, having rear supports, B', a chain-Wheel journaled in the frame, gearing for operating said chaiirwliecl, and devices for anchoring the frame to a tree pr stump, substantially as specified, the; combination,with said frame, of a Wheel, B, journaled at or to its forward end, substantially as shown and described, whereby should the anchorage give Way the machine will rebound on the Wheel B, as set forth.

8. In a stump-extractor, the combination, With the frame A, the chain-Wheel H, provided with elongated peripheral recesses h, and the chain I, passed over the wheel into the recesses, of the arm R r, substantially as and for the purposes herein set forth. v

4. In stunlp-extractors, the combination, with the frame A, the chain-Wheel H, and its operating-gearing, substantially as speciied, of the barrel T, for guiding the stump-pulling chain to the chai u-Wheel substantially as here in set forth.

ALEXANDER LOGAN.

Vitncsscs: Y

BLoWERs ARCHIBALD, J oHN J. FORBES. 

